Coding standards, review checklists, PR templates, release notes and deployment runbooks.
Coding Standards
The rules a team agrees to enforce — and, more importantly, which ones a machine enforces instead of a human.
Code Review Checklist
What a human should look for once linters, tests and scanners have had their turn.
Pull Request Template
The context a reviewer needs, collected before they start rather than asked for afterwards.
Release Notes
What changed, what breaks, and what the reader has to do about it.
Deployment Runbook
The exact sequence to ship a release, verify it, and back it out — written before the deployment starts.